Electronics Forum | Thu Jun 17 21:28:07 EDT 2010 | bob2000
Hello: I would like to know if a radial capacitor (1000uf, 25V)should be placed flash to the board? Thanks, Bob
Electronics Forum | Fri Jun 18 11:43:38 EDT 2010 | davef
With proper lead forming, a radial capacitor (1000uf, 25V) can be placed flush to the board. If you place it as you describe, does your product application environment require staking?
Electronics Forum | Sat Jun 19 17:05:25 EDT 2010 | bob2000
Thanks for sharing your work experience. I found a reference material with IPC standard (IPC 610) that specifies an exact heigth that a capacitor needs to be placed, I will check this standard specifications in more depth.
Electronics Forum | Fri Jun 18 12:33:02 EDT 2010 | bob2000
Davef, Thanks for the reply. I do not know if a radial capacitor needs to be secured with adhesive. The board in question is a class 2 device where high reliability needs to be achieved. I can not find any book references where adhesive application i
Electronics Forum | Fri Jun 18 15:37:44 EDT 2010 | remullis
One thing I have run into when placing cap's flush to the board is blow holes due to the plastic sheathing used around the cap. It would form a gasket going through wave and exhaust out of the holes therefore blowing the solder out with it. This cap
Electronics Forum | Wed Jul 10 04:53:47 EDT 2002 | redmary
a leakage exists in the capacitor net (1206), which cause the voltage down so much. the process flow is: printing-placement-reflow-hand load-wave-depanel-FT. I find possible stress maybe exists in the depanel stage, does the extra stress cause the ca
Electronics Forum | Wed Apr 22 05:33:06 EDT 2015 | mbb
We'have been working on an issue regarding aluminium capacitor placement in PCB. In fact, we have twisted (shifted) capacitors. Through root causes analysis, we confirmed that this phenomenon is happening during reflow process (no issue on placement
Electronics Forum | Mon Dec 18 16:43:22 EST 2006 | darby
Boomerang, You said you are new to this so, First question. Are the components placed correctly with no offset pre-reflow? If the answer is yes then it's happening in the oven. Most likely cause is pcb design. If the answer is no then you have a pla
Electronics Forum | Thu Dec 20 07:08:07 EST 2018 | robl
Hi Prem, OK... Is it definitely ok before the oven, as it's a big part to move. Never had an issue with them. Has the part got the correct z height on or is the paste being displaced on placement What machine are you placing it with (is it laser
Electronics Forum | Sun Dec 17 22:55:45 EST 2006 | foolat
I'd like to know how much capacitor offset from the pad should be acceptable? What are the risks of the placement offset if greater than the acceptable level? I'm still quite new to this so any help will be very much appreciated. Thanks
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